NEC Neax 2000 Ivs2 Isdn System Manual

 NEAX2000 IVS2 ISDN System ManualPage 30  ND-70919 (E), Issue 1.0
CHAPTER 1  GENERAL INFORMATION
DTI Specifications
* The S-bit is the first bit in each frame.
* Frames are repeated in the order shown above.
* Frames 6 and 12 become signal frames.
Table 1-6  12-Multi Frame Bit Assignment
FRAME No.S BIT
TERMINAL SYNCHRONIZATION 
(FT)SIGNAL SYNCHRONIZATION 
(FS)
11
20
30
40
51
61
70
81
91
10 1
11 0
12 0 

CHAPTER 1  GENERAL INFORMATION
DTI Specifications
NEAX2000 IVS2 ISDN System Manual    
ND-70919 (E), Issue 1.0   Page 31
(2) 24-Multi Frame
This configuration has 24-Multi Frames and each Multi frame has a 24-Channel PCM signal 
(8 bits/channel) and an S bit (Superframe Bit). Figure 1-14 shows the frame configuration, 
and Ta b l e  1 - 7 shows frame bit assignment.
Figure 1-14  DTI Frame Configuration (24-Multi Frame)
SCH1
112345678 12345678CH2
12 3 45 6 78CH3
12345678CH24
FRAME 1 FRAME 2 FRAME 3 FRAME...

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CHAPTER 1  GENERAL INFORMATION
DTI Specifications
* The S-bit is the first bit in each frame.
* Frames are repeated in the order shown above.
* Frames 6, 12, and 24 become signal frames.
* “m” in the “4 Kbps Data Link” column means that the frame is usually assigned to 1.
Table 1-7  24-Multi Frame Bit Assignment
FRAME No.S BIT
FRAME 
SYNCHRONIZATION4 Kbps DATA LINK CRC
1m
2CB1
3m
40
5m
6CB2
7m
80
9m
10 CB3
11 m
12 1
13 m
14 CB4
15 m
16 0...

CHAPTER 1  GENERAL INFORMATION
DTI Specifications
NEAX2000 IVS2 ISDN System Manual    
ND-70919 (E), Issue 1.0   Page 33
Frame Configuration of 30DTI
Based on 30-channel transmission method of ITU-T Specification, the frame configuration
consists of 16-multi frame, each frame having 32 time slots.
Figure 1-15 shows the frame configuration, and Table 1-8 shows the details of time slot
assignment.
Figure 1-15  Frame Configuration of 30DTI
TS0 TS1 TS2
FRAME 0 FRAME 1 FRAME 2 FRAME 3
125 µsecTS15 TS16 TS17...

 NEAX2000 IVS2 ISDN System ManualPage 34  ND-70919 (E), Issue 1.0
CHAPTER 1  GENERAL INFORMATION
DTI Specifications
Table 1-8  Time Slot Assignment of 30DTI
TIME 
SLOT No.EVEN No. FRAME ODD No. FRAME
TS0 Frame Alignment Signal (FAS)
TS1
TS15Voice Channel (B channel) 
CH1
CH15
TS16 D Channel Signaling
TS17
TS31Voice Channel (B channel)
CH17
CH31
X0 011 0 1101 2 3 4 5 6 7 bb
FAS
CRC BITX1 X11 1 1101 2 3 4 5 6 7 bb
REMOTE ALARM
CRC BIT
0: NORMAL
1: FRAME LOSS
~~
~~ 

NEAX2000 IVS2 ISDN System Manual    
ND-70919 (E), Issue 1.0   Page 35
CHAPTER 2
INSTALLATION
This chapter explains the hardware installation procedure to provide
ISDN interface to the PBX. 

 NEAX2000 IVS2 ISDN System ManualPage 36  ND-70919 (E), Issue 1.0
CHAPTER 2  INSTALLATION
Precautions
PRECAUTIONS
Static Electricity Guard
You must wear a grounded wrist strap to protect circuit cards from static electricity.
Figure 2-1  Static Electricity Guard (1 of 2)
 WHEN PLUGGING/UNPLUGGING A CIRCUIT CARD
 WHEN HOLDING A CIRCUIT CARD
PBX
WRIST STRAP
FRAME GROUND SCREW
CARD FRONT
NEVER TOUCH THE COMPONENTS OR 
SOLDERED SURFACE WITH BARE HANDS. 

CHAPTER 2  INSTALLATION
Precautions
NEAX2000 IVS2 ISDN System Manual    
ND-70919 (E), Issue 1.0   Page 37
Figure 2-1  Static Electricity Guard (2 of 2)
 WHEN MAKING A SWITCH SETTING ON A CIRCUIT CARD
 WHEN CARRYING A CIRCUIT CARD
The mark shown below is attached to the sheet for the work in which circuit cards are handled.
When engaging in such work, the installer must be careful not to cause damage by static
electricity.
WEAR A WRIST STRAP AND PERFORM
THE WORK ON A GROUNDED
CONDUCTIVE WORK SURFACE....

 NEAX2000 IVS2 ISDN System ManualPage 38  ND-70919 (E), Issue 1.0
CHAPTER 2  INSTALLATION
Precautions
CAU TIO N
You must hold the edge of a circuit card when plugging or unplugging the circuit card. If you 
touch another area, you may be exposed to hazardous voltages.
CARD FRONT
NEVER TOUCH THE COMPONENTS 
OR SOLDERED SURFACE WITH 
BARE HANDS.
PBX 

CHAPTER 2  INSTALLATION
Required Equipment
NEAX2000 IVS2 ISDN System Manual    
ND-70919 (E), Issue 1.0   Page 39
REQUIRED EQUIPMENT
ISDN-PRI Required Equipment
Ta b l e  2 - 1 shows the equipment required to provide ISDN with Primary Rate Interface to the
system.
ISDN-BRI Required Equipment
Ta b l e  2 - 2 shows the equipment required to provide ISDN with Basic Rate Interface to the system.
Table 2-1  ISDN-PRI Required Equipment
EQUIPMENT DESCRIPTION QUANTITY REMARKS
PN-24DTA-C 
(24-DTI)24-channel DTI...